User Manual

Basic Troubleshooting – Span Control Link

PRELIMINARY 2

SC 4812ET BTS Optimization/ATP – CDMA LMF

July 1999

5-28

Span Problems (No Control

Link)

Table 5-25: Troubleshooting Control Link Failure

 Step Action

1 Verify the span settings using the span_view command

on the active master GLI2 MMI port. If these are set

correctly, verify the edlc parameters using the

show

command. Any alarms conditions indicate that the span is

not operating correctly.

– Try looping back the span line from the DSX panel

back to the Mobility Manager (MM) and verify that

the looped signal is good.

– Listen for control tone on appropriate timeslot from

Base Site and MM.

2 If no traffic channels in groomed MCC24s (or in whole

C–CCP shelf) can process calls, verify that the ISB

cabling is correct and that ISB A and ISB B cables are not

swapped.